#define _CRT_SECURE_NO_WARNINGS 1
class Solution {
public:
    int minSubArrayLen(int target, vector<int>& nums) {
        int len = INT_MAX, sum = 0;
        for (int left = 0, right = 0; right < nums.size(); right++) {
            sum += nums[right];
            while (sum >= target) {
                len = min(len, right - left + 1);
                sum -= nums[left++];
            }
        }
        if (len > nums.size())
            return 0;
        return len;
    }
};